Server :: 4 Virtual Disk On AX4-5i / RHEL Showing 16 Partitions
Jul 29, 2010
I have 4 virtual disk on AX4-5i. RHEL for some reason shows 16 partitions in /proc/partitions. I got lot-lot of IO errors in dmesg. Some of those 16 partitions "work", others just give (on using fdisk for example): Unable to read /dev/sdb. On EMC I have 4 ports, so it might be somehow releated to this.
[root@db ~]# /etc/init.d/iscsi restart
Logging out of session [sid: 1, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a0, portal: 192.168.10.101,3260]
Logging out of session [sid: 2, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b0, portal: 192.168.10.103,3260]
Logging out of session [sid: 3, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a1, portal: 192.168.10.102,3260]
Logging out of session [sid: 4, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b1, portal: 192.168.10.104,3260]
Logout of [sid: 1, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a0, portal: 192.168.10.101,3260]: successful
Logout of [sid: 2, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b0, portal: 192.168.10.103,3260]: successful
Logout of [sid: 3, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a1, portal: 192.168.10.102,3260]: successful
Logout of [sid: 4, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b1, portal: 192.168.10.104,3260]: successful
Stopping iSCSI daemon:
iscsid dead but pid file exists [OK]
Starting iSCSI daemon: [OK]
[OK]
Setting up iSCSI targets: Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a0, portal: 192.168.10.101,3260]
Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b0, portal: 192.168.10.103,3260]
Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a1, portal: 192.168.10.102,3260]
Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b1, portal: 192.168.10.104,3260]
Login to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a0, portal: 192.168.10.101,3260]: successful
Login to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b0, portal: 192.168.10.103,3260]: successful
Login to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.a1, portal: 192.168.10.102,3260]: successful
Login to [iface: default, target: iqn.1992-04.com.emc:cx.sl7e2101800014.b1, portal: 192.168.10.104,3260]: successful
[OK]
[root@db ~]#
I've googled and read docs but got no idea what to do. Any experiences with EMC/RHEL/iSCSI - I just don't understand where those 16 (and half of them not working/giving lotof errors) come from? For example Citrix Xen on similar network conf can see/use same EMC thoughr iSCSI nicely. SO there should'nt be network/auth issues (not using CHAP btw). I got feeling that problem is on RHEL iscsi conf side.
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SATA DVD-Writer
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System:
C2D 3.1 Ghz
6 Gb of Ram
Nvidia 8800 gt
More info:
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fdisk -l output
Code:
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76a81caa .....
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Code:
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[code]....
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[code]....
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Code:
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UUID="1fac4a2c-6a2e-4278-bab4-c7179c8720ee" /media/Motherload ext4 exec,auto,async,rw 0 2 #4TB-ext4-/dev/mapper/pdc_cabedbfaef1
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[code]....
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